Carl paul hoenack



(No Model.)

C. P. HOBNACK.

ELECTRIC LAMP.

No. 258,885. P8tented Apr.18,1882.

N. PE1 ERS. PhowLimugmplnr, wanhinglcn, D. C.

UNITED STATES PATENT EEICE.

CARL PAUL HOENACK, 0F NEW YORK, N. Y.

ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent No. 256,655, dated April 18, 1882.

(No model.)

To all whom it may concern:

Be it known that I, CARL PAUL HoENAoK, of the city, county, and State of New York, have invented a new and useful Improvement in Carbon-Feed for Electric Lights, of which the following is a specification.

My invention relates to electric-circuit lamps in which the feed of the carbon is effected by means of a rack and pinion regulated by an escapement to retard and graduate the descent of the carbon, the object being to provide a simplified construction involving less friction and less expense to manufacture than similar devices heretofore in use, while yet admitting of a perfect electro-magnetic action to maintain' uniform distance between the opposite carbon points, and consequent steady light.

The invention consists in the construction and combination of parts whereby the escapement is made to act directly on the carbon rod,7 or, in other words, the pinion actuated by the weight of the carbon rod is centered on the axial line of the escapement-wheel, and the escapement-pawl oscillates in a plane at right angles to that in which the wheel is moving, as will he hereinafter described and claimed.

In the accompanying drawings, Figurel represents a side elevation of my improvement, partly in section. Fig. 2 is a horizontal section of the same, taken on the line rc c of Fig. 1. Fig. 3 is a detailsection of the same, taken on the line y y of Fig. I, and seen in direction of arrow 1.

Similar letters ofreferenceindicate like parts in the several gures.

A designates any suitable framework or bracket supportingthe movable parts upon the frame B of an electric lamp in operation, the carbon points being assumed to be atthe proper distance apart to establish the voltaic arc and emit the electric light. The friction-pawl c ot the core b of the electro-magnet C is keeping up the carbon rod D to retain the upper carbon point, d, at the proper distance above the lower carbon point, d.

The wires and arrowsindicate the direction of the current.

lVhen the ilmercoarse-wired coil,c, weakens by the increased resistance due to the distances apart of the carbon points as they are gradually consumed, the tine-wired coil c (which is wound in opposite direction to the coarse coil c, and thus has opposite polarity) forces the magnet-core b, with its pawl a, downward, thus allowing the rod D to proportionally descend by its own gravity and to re establish the proper distance and formal resistance, when the coarse magnet-coil c again becomes active, its force predominating, and the core bis pulled up enough to make the pawl again grasp and retain the carbon in the thus re-established normal position. Of course these movements are innitesimally small, so as to practically always retain the carbon points at the same distance apart. When the carbon is burned out the core b drops down until the armature b rests upon the insulated studs E, connected by wire c to the binding-post c', the light is extinguished, and the current passes on directly through the wire c2 to the next and subsequent lamps in the circuit, and thence to the electric machine or generator.

lThe rod D is a rack, being provided with cogs or teeth, as usual, in which mesh the cogs of a pinion, F, by which pinion the descending motion of the rod'is transmitted to the escapementwheel G and its pawl H, which latter react by retarding the motion, so as to make the descent of the rod gradual and uniform. y

One end of the arbor fof the pinion F is reduced a little in size, so as to form a shoulder atff, and the eseapement-wheel G istitted upon the reduced portion of the arbor and held in position with snfcient working friction between the said shoulder (or a washer, f2, fast upon the arbor) and a spring-plate, g, tightened against the wheel G by an end nut, a, upon the arbor. rI his allows of sliding the rod D by hand and placing it at any desired elevation when it is required to adjust or replace the carbon by simply applying force sniicient to overcome the friction between the plate g and the wheel G. The teeth of the escapementwheel Gr consist of round pins g', fastened IOO to; and the pawl is made of two members, 71 and 7a2, placed upon the arbor I at the proper distance apart to allow one pin, g', to pass through the opening between them when the 5 pawl H is oscillated by the pressure due to the combined weight of the rod 1) and the carbon d.

The working surface of each of the members 7L h2 of the pawl H are tapering orinclined to-y 1o ward the center line ofthe pins g', so that each in its turn acts as a graduallyreceding stop against each tooth or pin gf, thus allowing the wheel G to move only with slow and uniform velocity when the rod descends.

15 The desired amount of velocity is obtained by regulating the velocityot'oscillation, which is done by a weight, J, fastened upon the arbor I, and exchangeable weights or rods K, attachable to the perimeter oi' the weight J, as shown zo in the drawings, an increase ofthe weight decreasing the velocity, and viceversa. By thus attaching the escapement wheel G direct-ly upon the arbor ofthe pinion F and constructing the teeth g and pawl H as described, a uniform feed is obtained, not liable to sudden 25 falls and stops, as would be the inevitable effect ot' the old cscapeinent, in which the pawl oscillates in the plane of the wheel, and not necessitating the complicating gearing hitherto employed to obviate such variable velocity. 3o

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In an electric lamp, the escapeinent-pawl II, wheel G, having peripheral teeth g', pinion F, 35 and the carbon rack D, in combination with the clutch a and means, substantially as described, 'or operating said clutch, as and for the purpose specified.

CARL PAUL HOENACK.

Witnesses:

A. W. ALMQVIs'r, JOHN M. STELLE. 

